feat: governance scripts

gov/scripts/.gitignore

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+/node_modules/
+.yarn/cache
+.yarn/install-state.gz

gov/scripts/package.json

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+{
+  "name": "gov-scripts",
+  "version": "1.0.0",
+  "description": "Governance Scripts",
+  "license": "MIT",
+  "type": "module",
+  "scripts": {
+    "propose-upgrade": "ts-node --esm ./src/proposeupgrade.ts"
+  },
+  "dependencies": {
+    "@polkadot/api": "^10.10.1",
+    "@types/node": "^20.4.2",
+    "ts-node": "^10.9.1",
+    "typescript": "^5.1.6"
+  }
+}

gov/scripts/src/proposeupgrade.ts

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+import { ApiPromise, WsProvider } from '@polkadot/api';
+import { blake2AsHex } from '@polkadot/util-crypto';
+import { readFileSync } from 'fs';
+
+async function main() {
+    const networkUrl = process.argv[2];
+    const wasmFile = process.argv[3];
+
+    const wsProvider = new WsProvider(networkUrl);
+    const api = await ApiPromise.create({ provider: wsProvider });
+
+    const wasmFileBytes = readFileSync(wasmFile);
+    const wasmFileHash = blake2AsHex(wasmFileBytes, 256);
+
+    const authorizeUpgrade = api.tx.parachainSystem.authorizeUpgrade(wasmFileHash, true);
+
+    const councilMembers = (await api.query.council.members()).toJSON() as any[];
+    const councilProposalThreshold = Math.floor(councilMembers.length / 2) + 1;
+
+    const democracyProposal = api.tx.democracy.externalProposeDefault({
+        Inline: authorizeUpgrade.method.toHex(),
+    });
+
+    const councilProposal = api.tx.council.propose(
+        councilProposalThreshold,
+        democracyProposal,
+        democracyProposal.method.encodedLength,
+    );
+
+    const encodedCall = councilProposal.method.toHex();
+
+    console.log('-----------------');
+    console.log('Upgrade Proposal: ', `https://polkadot.js.org/apps/?rpc=${networkUrl}#/extrinsics/decode/${encodedCall}`);
+    console.log('-----------------');
+
+    await api.disconnect();
+}
+
+await main();

gov/scripts/tsconfig.json

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+{
+	"compilerOptions": {
+		"target": "ES2020",
+		"moduleResolution": "node",
+		"esModuleInterop": true,
+		"resolveJsonModule": true,
+		"module": "ESNext",
+		"sourceMap": true,
+		"outDir": "dist",
+		"strict": true
+	},
+	"include": ["./src/**/*"],
+	"lib": ["es2017"],
+	"ts-node": {
+		"experimentalSpecifierResolution": "node"
+	}
+}